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Hello,
I have liquid damaged 820-3476. Which is power cycling.
Vcore is present
It seems that spi_mlb_clk and spi_mlb_mosi only present when board is turned off. When it trys to turn on I get 0v on those.
Any ideas what going on? Bad traces?
Hello,
I have 2014 820-3437 motherboard that won't boot.
It turn ons and loads loading bar to full and then stucks.
I seem that someone was messing with bios. Found solder balls around bios chip.
Tried new bios with clean me but still wont turn on fully.
( Found bios on internet so no idea if...
Macbook chimes but no image or backlight.
ppvcore_s0_cpu_ph1 - always present
ppvcore_s0_axg_r only present for 10-15s then drops to 0v and never comes back.
What should I look for first?
Hello,I have old 2011 820-3023 motherbaord that keyboard isn' working. Trackpad works fine. Good known keyboard,cable and trackpad.
j5700 voltages when cable is connected.
1. 3.308v
2. 3.277
3. 0v
4. 0v
5. 3.089v
6. 0v
7. 0v
8. 3.309 - drops to 3.23v and then jumps 3.3v
9. 3.308 - drops to 3.23v...
Liquid damage.
had missing u7090 pin and crap under smc.
After fixing u7090 and smc macbook turned on.
No idea what happened but now all rails fine only cpu vcore 1.759V
Tried replacing u1900 and u1950
No liquid damage. Green/orange light. Had short on pp3v42_g3h.
ppbus = 12.57v - stable
g3h = 3.402V -stable
ppvrtc = 3.337v -stable
pp5v_s5 = 5.03v -stable
pp5v_sus = 5.03v
pp3v3_s5 = 3.337v
All other rails when charger connected pulses.
Seems no short to ground.